Question

worksheetsnaming and formula writingtotal questions: 21worksheet time: 15minsnameclassdate1. calcium phosphatea) $capo_4$b) $ca_2(po_4)_3$c) $ca_3po_4$d) $ca_3(po_4)_2$2. barium hydroxidea) $ba(oh)_2$b) $ba_2oh$c) $baoh$d) $ba_2oh$3. magnesium carbonatea) $mg_2c$b) $mg_2co_4$c) $mg_2(co_3)_2$d) $mgco_3$4. copper(ii) chloridea) $cucl_2$b) $cucl$c) $cu_2cl$d) $cu_2cl_2$5. potassium hydroxidea) $kh$b) $koh$c) $k_2oh$d) $k(oh)_2$6. zinc sulfatea) $znso_3$b) $znso_4$c) $zns$d) $zn(so_4)_2$

Explanation:

Step1: Balance calcium phosphate charges

Calcium ($\text{Ca}^{2+}$), phosphate ($\text{PO}_4^{3-}$). Cross charges: $3\text{Ca}^{2+} + 2\text{PO}_4^{3-}
ightarrow \text{Ca}_3(\text{PO}_4)_2$

Step2: Balance barium hydroxide charges

Barium ($\text{Ba}^{2+}$), hydroxide ($\text{OH}^-$). Cross charges: $\text{Ba}^{2+} + 2\text{OH}^-
ightarrow \text{Ba(OH)}_2$

Step3: Balance magnesium carbonate charges

Magnesium ($\text{Mg}^{2+}$), carbonate ($\text{CO}_3^{2-}$). Charges cancel: $\text{Mg}^{2+} + \text{CO}_3^{2-}
ightarrow \text{MgCO}_3$

Step4: Balance copper(II) chloride charges

Copper(II) ($\text{Cu}^{2+}$), chloride ($\text{Cl}^-$). Cross charges: $\text{Cu}^{2+} + 2\text{Cl}^-
ightarrow \text{CuCl}_2$

Step5: Balance potassium hydroxide charges

Potassium ($\text{K}^+$), hydroxide ($\text{OH}^-$). Charges cancel: $\text{K}^+ + \text{OH}^-
ightarrow \text{KOH}$

Step6: Balance zinc sulfate charges

Zinc ($\text{Zn}^{2+}$), sulfate ($\text{SO}_4^{2-}$). Charges cancel: $\text{Zn}^{2+} + \text{SO}_4^{2-}
ightarrow \text{ZnSO}_4$

Answer:

1. d) $\text{Ca}_3(\text{PO}_4)_2$
2. a) $\text{Ba(OH)}_2$
3. d) $\text{MgCO}_3$
4. a) $\text{CuCl}_2$
5. b) $\text{KOH}$
6. b) $\text{ZnSO}_4$